Marta Gutiérrez-Valencia1,2, Mikel Izquierdo3,4, Esther Lacalle-Fabo5, Itxaso Marín-Epelde6, María Fernanda Ramón-Espinoza6, Thamara Domene-Domene6, Álvaro Casas-Herrero6,7, Arkaitz Galbete8,9, Nicolás Martínez-Velilla6,7,4. 1. Department of Geriatrics, Complejo Hospitalario de Navarra, C/Irunlarrea 3, 31008, Pamplona, Spain. marta.guva@gmail.com. 2. IdiSNa, Navarra Institute for Health Research, Pamplona, Navarra, Spain. marta.guva@gmail.com. 3. Health Science Department, Public University of Navarra, Pamplona, Navarra, Spain. 4. CIBER of Frailty and Healthy Aging, Madrid, Spain. 5. Pharmacy Department, Complejo Hospitalario de Navarra, Pamplona, Navarra, Spain. 6. Department of Geriatrics, Complejo Hospitalario de Navarra, C/Irunlarrea 3, 31008, Pamplona, Spain. 7. IdiSNa, Navarra Institute for Health Research, Pamplona, Navarra, Spain. 8. Navarrabiomed-Departamento de Salud-UPNA, Pamplona, Spain. 9. Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain.
Abstract
PURPOSE: Frailty, polypharmacy, and underprescription are considered a major matter of concern in nursing homes, but the possible relationships between them are not well known. The aim is to examine the possible association between medication underprescription, polypharmacy, and frailty in older people living in nursing homes. METHODS: A cross-sectional analysis from a concurrent cohort study, including 110 subjects ≥ 65 years living in two nursing homes. Four frailty scales were applied; polypharmacy was defined as ≥ 5 medications and underprescription was measured with Screening Tool to Alert to Right Treatment (START) criteria. Logistic regression models were performed to assess the associations. RESULTS: The mean age was 86.3 years (SD 7.3) and 71.8% were female. 73.6% of subjects took ≥ 5 chronic medications and 60.9% met one or more START criteria. The non-frail participants took more medications than the frail subjects according to the imputated frailty Fried criteria (8.1 vs 6.7, p = 0.042) and the FRAIL-NH scale (7.8 vs 6.8, p = 0.026). Multivariate analyses did not find an association between frailty and polypharmacy. Frail participants according to the Fried criteria met a higher number of START criteria (1.9 vs 1.0, p = 0.017), and had a higher prevalence of underprescription (87.5 vs 50.0%), reaching the limit of statistical significance in multivariate analysis. CONCLUSION: The positive association found in previous studies between frailty and polypharmacy cannot be extrapolated to institutionalized populations. There is a trend towards higher rates of underprescription in frail subjects. Underprescription in frail older adults should be redefined and new strategies to measure it should be developed.
PURPOSE: Frailty, polypharmacy, and underprescription are considered a major matter of concern in nursing homes, but the possible relationships between them are not well known. The aim is to examine the possible association between medication underprescription, polypharmacy, and frailty in older people living in nursing homes. METHODS: A cross-sectional analysis from a concurrent cohort study, including 110 subjects ≥ 65 years living in two nursing homes. Four frailty scales were applied; polypharmacy was defined as ≥ 5 medications and underprescription was measured with Screening Tool to Alert to Right Treatment (START) criteria. Logistic regression models were performed to assess the associations. RESULTS: The mean age was 86.3 years (SD 7.3) and 71.8% were female. 73.6% of subjects took ≥ 5 chronic medications and 60.9% met one or more START criteria. The non-frail participants took more medications than the frail subjects according to the imputated frailty Fried criteria (8.1 vs 6.7, p = 0.042) and the FRAIL-NH scale (7.8 vs 6.8, p = 0.026). Multivariate analyses did not find an association between frailty and polypharmacy. Frail participants according to the Fried criteria met a higher number of START criteria (1.9 vs 1.0, p = 0.017), and had a higher prevalence of underprescription (87.5 vs 50.0%), reaching the limit of statistical significance in multivariate analysis. CONCLUSION: The positive association found in previous studies between frailty and polypharmacy cannot be extrapolated to institutionalized populations. There is a trend towards higher rates of underprescription in frail subjects. Underprescription in frail older adults should be redefined and new strategies to measure it should be developed.
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